Today's aircrafts are more silent than in past and in the next few years they will be gradually substituted by aircrafts with even lower noise emissions.
The noise produced by aviation operations is mainly due to two factors: engines (during take-off) are the first and the second is the impact of air on the fuselage, on the wings and on the landing gear (during landing).
Moreover, the take-off takes place on a smaller part of land, because aircrafts rise very quickly, while landings involve wider areas.
For this reason, one of the main factors of aircraft-generated noise management is to carefully distribute operations on both runway directions.
Unidirectional use of the runway: indeed, Naples Airport has a runway oriented east/west, which can be used unidirectionally in both directions. This means that landings and take-offs can take place unidirectionally in one or the other side of the runway depending on the weather and on the optimal operating conditions defined by air traffic controllers. The balanced use of the runway supposes that take-offs and landings should take place 75% times in the direction of the City of Casoria, and 25% in the direction of the City of Naples. Over the years, these percentages remained substantially unchanged, also because they coincide with the different dominant winds blowing in the different seasons of the year.
Noise abatement procedure for take-offs in the direction of the city of Naples: in 2005, the Airport Commission for noise management (Commission set as per art. 5 of the Ministerial Decree dated 31/10/97) developed a specific noise abatement procedure for take-offs in the direction of the City of Naples, in order to minimize the impact during the noisiest operations. This procedure reconciles the maximum safety given by the most updated radio-assistance equipment with the abatement of noise impact on the city.
Indeed, it allows a considerable reduction of the overflying territory and thus a substantial improvement of acoustic pressure on the city, while maintaining safety standards unchanged.